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Old 09-07-2011, 10:55 AM   #1
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2005 Jayflight 28BH Question

I looking for some help with my 28BH Jayflight and I'm hopeing someone can assist me. My family and I headed up to Iowa on Friday to get a weekend in of camping, before leaving I did my routine checks prior to getting on our way. Checked all the trailer lighting, brake system and made sure the refrigerator was running off of the truck power eat. etc. Halfway up I stopped at the store to get some food for the weekend and i noticed the trailer brakes were not working, i had power from the box but no brakes. I then went inside the TT and noticed the refrigerator and livingroom light would not work as they normally would while being plugged into the truck. All of the other trailer running lights, brake lights and turn signals worked normally. Is there a fuse located in the trailer for the brake and refrigerator that is seperate from the breaker panel? Any help would be appreciated.
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Old 09-07-2011, 11:05 AM   #2
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Welcome to the Jayco Owners Forum Mantam! Glad you could find us as there are quite a few mechanical techie members here who love to share their experience and knowlege.
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Old 09-07-2011, 12:02 PM   #3
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First let me say that on my trailer the fridge only works on shore power or gas and that the battery only is used for electroiic ignition of the gas you might have a 3 way fridge that works on battery as well but most newer trailers only have a 2 way as far as I have seen. as far as the brakes go there is a fuse in most Tow vehicles for the brake controler havent seen a fuse on any of my trailers just for the brakes.
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Old 09-07-2011, 12:47 PM   #4
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Quote:
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First let me say that on my trailer the fridge only works on shore power or gas and that the battery only is used for electroiic ignition of the gas.....snip
Randy,

Your correct about the electronic ignition, but I believe there is also a small 12V DC circuit board tied into the frig as well (also part of ignition circuit), loose 12V power the frig won't operate on gas.

Mantam: There should be a fused link on the positive battery cable just prior to the battery..., but I would also check the battery cable connections at the battery.

Another source could be the battery charging connection at the 7-pin connector.... may also be compromised.

Bob
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Old 09-07-2011, 01:01 PM   #5
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Yes Rustic Eagle that is what I was at least trying to say but there is no fuse that I know of that would affect just the fridge and the brakes.
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Old 09-07-2011, 01:38 PM   #6
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snip......but there is no fuse that I know of that would affect just the fridge and the brakes.
I don't recall running across one in the past either.

The OP mentioned that his TT ceiling light wasn't working either, this seems to indicate that the entire 12V DC system of the TT is not operating.

The TT "exterior" lights I believe will continue to operate off the TV's system via the 7-pin connection.

I'm more of a wrench and sledgehammer guy, electrical is not my strong suit.

Bob
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Old 09-07-2011, 03:27 PM   #7
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Thanks for all the quick replies. Rustic eagle is correct. The exterior light as well as the main cabin light are not working off of the 7 pin connector from the TV. My refrigerator would also normally operate off of the power supplied from the TV. It's just strange that I lost all the above at the same time I lost the electric brakes. I checked all the fuses on the TV and the brake controller still has power. I would really like to fix this myself versus taking it to the shop. This way it helps me that much more on getting to know my TT and repair any problems that may occur while camping.
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Old 09-07-2011, 03:31 PM   #8
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Yea well I missed that lights wouldnt work inside ether I would check fuse at the battery if that is blown then no 12v power will get inside. but still the brake line is from the 7 pin connector and does not work off of main trailer battery it is from the TV.
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Old 09-07-2011, 04:06 PM   #9
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Our '05 29bhs will not get power inside (ie lights, fridge, etc) if the battery cables are off, the battery is completely dead or the fuse on the hot line for the battery is blown. For the brakes, check the 7 pin connector at the bumper of the TV, if juice there, then try and trace the wires to the junction box next to the frame in the front of the trailer. See if there is juice there. What kind of TV do you have?
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Old 09-07-2011, 06:24 PM   #10
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Mantam,

Don't know if it will help, but here is the 7-pin connection layout:



Bob
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